EP1468789A3 - Clutch for rotary power tool and rotary power tool incorporating such clutch - Google Patents

Clutch for rotary power tool and rotary power tool incorporating such clutch Download PDF

Info

Publication number
EP1468789A3
EP1468789A3 EP04008739A EP04008739A EP1468789A3 EP 1468789 A3 EP1468789 A3 EP 1468789A3 EP 04008739 A EP04008739 A EP 04008739A EP 04008739 A EP04008739 A EP 04008739A EP 1468789 A3 EP1468789 A3 EP 1468789A3
Authority
EP
European Patent Office
Prior art keywords
spindle
slider sleeve
drive gear
sleeve
teeth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04008739A
Other languages
German (de)
French (fr)
Other versions
EP1468789A2 (en
Inventor
Manfred Dipl.-Ing. Droste
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Black and Decker Inc
Original Assignee
Black and Decker Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0309055A external-priority patent/GB2400635A/en
Priority claimed from GB0310287A external-priority patent/GB2401410A/en
Priority claimed from GB0325879A external-priority patent/GB2407851A/en
Application filed by Black and Decker Inc filed Critical Black and Decker Inc
Publication of EP1468789A2 publication Critical patent/EP1468789A2/en
Publication of EP1468789A3 publication Critical patent/EP1468789A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/003—Clutches specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/165—Overload clutches, torque limiters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/231—Sleeve details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/345—Use of o-rings

Abstract

An overload clutch for a rotary hammer is described. An external surface of a spindle 4 is formed with a series of tapering grooves 104 which become narrower in a direction moving towards the forward end of the spindle 4. A slider sleeve 41 is provided with splines 106 which also taper in a direction towards the forward end of the slider sleeve 41. In this way, the slider sleeve 41 is prevented from rotating relative to the spindle 4, but can slide axially to a limited extent relative thereto. A rearward end of the slider sleeve 41 is provided with a recess 108 having an inclined internal surface for accommodating elastomeric O-ring 42. When the torque required to rotationally drive the spindle 4 is below a predetermined threshold, a spring 56 biases the slider sleeve 41 into engagement with elastomeric O-ring 42, and a spring 47 biases sets of cooperating teeth on a spindle drive gear 40 and slider sleeve 41 into engagement with each other. With these sets of cooperating teeth engaged, the spindle drive gear 40 rotationally drives the slider sleeve 41 via the interlocking facing teeth. As a result, the slider sleeve 41 rotationally drives the spindle 4 by means of cooperation between the splines 106 on the slider sleeve 41 and the grooves 104 on the sleeve 4. When the torque required to rotationally drive the spindle 4 exceeds the predetermined torque threshold, however, inclined surfaces of the mutually engaging teeth on the spindle drive gear 40 and slider sleeve 41 slide over each other, as a result of which the drive gear 40 slides forwardly along the slider sleeve 41 against the action of spring 47. The spindle drive gear 40 can then rotate relative to the slider sleeve 41 and the cooperating sets of teeth ratchet over each other, preventing the rotary drive from the spindle drive gear 40 being transmitted to the spindle 4. The ratcheting of the sets of teeth also makes a noise which alerts the user of the hammer to the fact that the overload clutch arrangement is slipping.
EP04008739A 2003-04-17 2004-04-13 Clutch for rotary power tool and rotary power tool incorporating such clutch Withdrawn EP1468789A3 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB0309055 2003-04-17
GB0309055A GB2400635A (en) 2003-04-17 2003-04-17 Tapered spline slip clutch
GB0310287A GB2401410A (en) 2003-05-03 2003-05-03 An overload clutch having an elastomeric O-ring stop and tapered splines
GB0310287 2003-05-03
GB0325879A GB2407851A (en) 2003-11-06 2003-11-06 Slip clutch for rotary power tool
GB0325879 2003-11-06

Publications (2)

Publication Number Publication Date
EP1468789A2 EP1468789A2 (en) 2004-10-20
EP1468789A3 true EP1468789A3 (en) 2008-06-04

Family

ID=32912678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04008739A Withdrawn EP1468789A3 (en) 2003-04-17 2004-04-13 Clutch for rotary power tool and rotary power tool incorporating such clutch

Country Status (2)

Country Link
US (1) US7216749B2 (en)
EP (1) EP1468789A3 (en)

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SE526996C2 (en) * 2003-10-03 2005-12-06 Atlas Copco Tools Ab Power tool with angle gear and drive spindle adjustment
DE102006000252A1 (en) * 2006-05-30 2007-12-06 Hilti Ag Hand tool with slip clutch
DE102007010182A1 (en) * 2007-03-02 2008-09-04 Robert Bosch Gmbh Gearing arrangement for a hammer drill and/or chisel hammer comprises a spring element arranged on a driven unit in front of a toothed wheel unit and a locking element along a power flow direction of the driven unit
EP2160271B1 (en) 2007-06-15 2014-04-30 Black & Decker, Inc. Hybrid impact tool
US7735575B2 (en) 2007-11-21 2010-06-15 Black & Decker Inc. Hammer drill with hard hammer support structure
US7717191B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode hammer drill with shift lock
US7798245B2 (en) 2007-11-21 2010-09-21 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement
US7762349B2 (en) 2007-11-21 2010-07-27 Black & Decker Inc. Multi-speed drill and transmission with low gear only clutch
US7854274B2 (en) * 2007-11-21 2010-12-21 Black & Decker Inc. Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing
US7770660B2 (en) 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process
US7717192B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode drill with mode collar
CN101444909B (en) * 2007-11-27 2013-03-27 希尔蒂股份公司 Hand-held tool machine with pneumatic impacting device
US9193053B2 (en) * 2008-09-25 2015-11-24 Black & Decker Inc. Hybrid impact tool
US8631880B2 (en) * 2009-04-30 2014-01-21 Black & Decker Inc. Power tool with impact mechanism
US8460153B2 (en) * 2009-12-23 2013-06-11 Black & Decker Inc. Hybrid impact tool with two-speed transmission
CN101758486B (en) * 2010-01-21 2011-09-28 浙江海王电器有限公司 Light single-button multifunctional electric hammer
US8584770B2 (en) 2010-03-23 2013-11-19 Black & Decker Inc. Spindle bearing arrangement for a power tool
US8231569B2 (en) * 2010-12-14 2012-07-31 St. Jude Medical, Atrial Fibrillation Division, Inc. Torque-limiting catheter handle
CN102700414A (en) * 2012-05-22 2012-10-03 张智剑 Automobile load controller
US9630307B2 (en) 2012-08-22 2017-04-25 Milwaukee Electric Tool Corporation Rotary hammer
DE102012216137A1 (en) * 2012-09-12 2014-03-13 Hilti Aktiengesellschaft Hand tool
US9289878B2 (en) * 2013-08-30 2016-03-22 Ingersoll-Rand Company Grinders with friction drives
GB201421577D0 (en) * 2014-12-04 2015-01-21 Black & Decker Inc Drill
GB201421576D0 (en) 2014-12-04 2015-01-21 Black & Decker Inc Drill
US10406667B2 (en) * 2015-12-10 2019-09-10 Black & Decker Inc. Drill
CN109262549B (en) * 2017-07-17 2021-04-06 博世电动工具（中国）有限公司 Electric tool
US11026434B2 (en) * 2017-09-06 2021-06-08 Bettcher Industries, Inc. Power operated trimming tool
US10731713B1 (en) * 2019-01-18 2020-08-04 Bettcher Industries, Inc. Power operated trimming tool with clutch drive
US11375723B2 (en) 2019-05-22 2022-07-05 Bettcher Industries, Inc. Power operated scribe saw
USD912486S1 (en) 2019-05-23 2021-03-09 Bettcher Industries Inc. Dehiding tool
US11533919B2 (en) 2020-07-21 2022-12-27 Bettcher Industries, Inc. Feed roll for power operated trimming tool

Citations (5)

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Publication number Priority date Publication date Assignee Title
US2064646A (en) * 1933-07-19 1936-12-15 Grace I Haley Automatic change speed transmission gearing
US5094330A (en) * 1991-07-19 1992-03-10 Lee Song Ming Power transmission mechanism with automatic clutch means
US5201373A (en) * 1991-01-05 1993-04-13 Robert Bosch Gmbh Hand held power tool with safety coupling
GB2324485A (en) * 1997-04-25 1998-10-28 Bosch Gmbh Robert Overload clutch
EP1413778A1 (en) * 2002-10-23 2004-04-28 Black & Decker Inc. Power tool

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IT1070120B (en) 1975-09-11 1985-03-25 Walterscheid Gmbh Jean FREEWHEEL COUPLING FOR THE LIMITATION OF THE TORQUE TRANSMITTED BY A MOTOR TO AN OPERATING MACHINE
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DE4215288A1 (en) * 1991-07-08 1993-01-14 Bosch Gmbh Robert DRILLING HAMMER
US5499828A (en) 1994-03-04 1996-03-19 Power Tool Holders Incorporated Lever bar keyless chuck
JP3284759B2 (en) 1994-06-09 2002-05-20 日立工機株式会社 Impact driver
US5588496A (en) 1994-07-14 1996-12-31 Milwaukee Electric Tool Corporation Slip clutch arrangement for power tool
DE4426305C2 (en) 1994-07-25 1997-03-06 Hilti Ag Adaptive slip clutch
DE19527192A1 (en) 1995-07-26 1997-01-30 Hilti Ag Screwdriver
JP3424880B2 (en) 1995-08-18 2003-07-07 株式会社マキタ Hammer drill
US5857913A (en) 1995-09-06 1999-01-12 Tsubakimoto Emerson Co. Hollow shaft reduction gear with overload protecting device
JP3291609B2 (en) 1996-02-13 2002-06-10 株式会社マキタ Power tool clutch mechanism
DE19707588B4 (en) 1997-02-26 2005-08-18 Robert Bosch Gmbh Machine tool, in particular drill or impact drill or hammer drill
US5947214A (en) 1997-03-21 1999-09-07 Baker Hughes Incorporated BIT torque limiting device
JP3628486B2 (en) 1997-06-30 2005-03-09 株式会社マキタ Screw tightener clutch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2064646A (en) * 1933-07-19 1936-12-15 Grace I Haley Automatic change speed transmission gearing
US5201373A (en) * 1991-01-05 1993-04-13 Robert Bosch Gmbh Hand held power tool with safety coupling
US5094330A (en) * 1991-07-19 1992-03-10 Lee Song Ming Power transmission mechanism with automatic clutch means
GB2324485A (en) * 1997-04-25 1998-10-28 Bosch Gmbh Robert Overload clutch
EP1413778A1 (en) * 2002-10-23 2004-04-28 Black & Decker Inc. Power tool

Also Published As

Publication number Publication date
US7216749B2 (en) 2007-05-15
US20040216976A1 (en) 2004-11-04
EP1468789A2 (en) 2004-10-20

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